Which resolutions does the Cisco TelePresence MCU support in the H.239 channel?

It will transmit QVGA, VGA, SVGA and XGA with H.263+ - and QVGA, VGA and XGA with H.264 - in the H.239 channel. (It will not transmit SVGA at H.264 because the height is not a multiple of 16 pixels and this causes unpredictable behavior in some endpoints when using the H.264 codec).